North Maharashtra University 2009 B.Sc Chemistry Acids & Bases - Question Paper

S.Y.B.Sc. CH-221( Inorganic Chemistry)

---

2 MARKS
1. describe acid according to Arrhenius theory
2. provide the definition of Base according to Arrhenius theory
3. Why the free proton H+ can not exist in water?
4. State 2 limitation of Arrhenius theory
5. provide the definition of acid & base presumed by Bronsted-Lowry.
6. How conjugate acid-base pair is formed?
7. describe self ionization of solvent.
8. State 1 merit of theory of solvent system.
9. Identify base & acid in subsequent reaction using Lux-Flood concept.
CaO + SiO2 CaSiO3
10. describe Lewis base & state the nature of bond formed by it.
11. describe hard acid & hard base.
12. Name 3 metal ion of hard acid kind.

3 MARKS
1. elaborate merits & de-merits of solvent system.
2. discuss the difference ranging from Lewis & Lowry-Bronsted theory
3. discuss with example Lux-Flood concept of acid & bases.
4. describe soft base & provide 2 stable complexes formed by soft bases with
ligand
5. State the demerits of Lewis concept.
6. discuss conjugate acid base pair with suitable example.

4 MARKS
1. describe Cady-Elsey concept of acid & bases and gave 1 example of
each.
2. discuss the drawbacks of solvent system theory.
3. provide 1 example of neutralization reaction in any solvent.
4. provide 3 characteristics features of soft acids.
5. explain the auto dissociation of water & forms hydrated proton.
6. define Arrhenius theory & state where it can be applied.
7. elaborate protonic, aprotic & amphiprotic solvent.

6MARKS
1. elaborate hard & soft acid & bases? discuss giving metal ion of hard acid
kind & soft acid kind.
2. define in brief Arrhenius theory of acids & bases giving suitable
examples showing neutralization
3. define the Bronsted-Lowry concept of acids & bases & discuss two
Bronsted acid base reactions in the solvent.
4. define in details the Lux-Flood concept of acids & bases. discuss with
example.

Earning:   Approval pending.